Letter opener



FIG. 1 is a front elevational view of a letter opener showing my new design;

FIG. 2 is a right end elevational view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a letter opener, as shown and described. 